CLIMATE CONTROL SEAT SYSTEM, Diagnostic DTC:B14F2

DTC Code DTC Name
B14F2 Seat Heater Temperature Sensor Malfunction

DESCRIPTION

Outputs to the rear cushion cover's temperature sensor stop if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.

DTC Code DTC Detection Condition Trouble Area
B14F2 Seat Heater Temperature Sensor Malfunction

  • Front seat cushion cover

  • Rear seat cushion cover

  • Rear seatback cover

  • Seat climate control ECU

  • Harness or connector

WIRING DIAGRAM

A01GYZPE44
A01GZ10E16

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is output (Front seat climate control ECU LH) A
      DTC is output (Front seat climate control ECU RH) B
      DTC is output (Rear seat climate control ECU LH) C
      DTC is output (Rear seat climate control ECU RH) D

    B

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    NG

    INSPECT FRONT SEAT CUSHION COVER LH Click here

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  3. INSPECT FRONT SEAT CUSHION COVER LH

    A01H0HRE05

    1. Disconnect the e115 cushion cover connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (THL) - 6 (RL) Outside air temperature 20 to 40°C (68 to 104°F) 10.5 to 4 kΩ

    NG

    REPLACE FRONT SEAT CUSHION COVER LH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER LH)

    A01H0RSE12

    1. Disconnect the e114 ECU connector.

    2. Disconnect the e115 cushion cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      e114-6 (H5) - e115-1 (THL) Always Below 1 Ω
      e114-7 (HS) - e115-6 (PL) Always Below 1 Ω
      e114-6 (H5) - Body ground Always 10 kΩ or higher
      e114-7 (HS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  5. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    NG

    INSPECT FRONT SEAT CUSHION COVER RH Click here

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  6. INSPECT FRONT SEAT CUSHION COVER RH

    A01H0HRE06

    1. Disconnect the e107 cushion cover connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (TRH) - 6 (PR) Outside air temperature 20 to 40°C (68 to 104°F) 10.5 to 4 kΩ

    NG

    REPLACE FRONT SEAT CUSHION COVER RH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER RH)

    A01H0RSE13

    1. Disconnect the e105 ECU connector.

    2. Disconnect the e107 cushion cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      e105-6 (H5) - e107-1 (THR) Always Below 1 Ω
      e105-7 (HS) - e107-6 (PR) Always Below 1 Ω
      e105-6 (H5) - Body ground Always 10 kΩ or higher
      e105-7 (HS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  8. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (w/o Ottoman) B
      OK (w/ Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  9. INSPECT REAR SEAT CUSHION COVER LH


    1. Remove the cushion cover LH.

      w/o Ottoman Click here

      w/ Ottoman Click here

    2. Inspect the cushion cover LH.


      • w/o Ottoman Click here

        w/ Ottoman Click here

        Result
        Result Proceed to
        OK A
        NG (w/o Ottoman) B
        NG (w/ Ottoman) C

    B

    REPLACE REAR SEAT CUSHION COVER LH Click here

    C

    REPLACE REAR SEAT CUSHION COVER LH Click here

    A

  10. INSPECT REAR SEATBACK COVER LH


    1. Disconnect the seatback cover LH.


    2. Inspect the seatback cover LH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEATBACK COVER LH Click here

    C

    REPLACE REAR SEATBACK COVER LH Click here

    A

  11. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER LH)

    A01H1A4E12

    1. Disconnect the f51 ECU connector.

    2. Disconnect the f50 seatback cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f51-6 (H5) - f50-2 (THL) Always Below 1 Ω
      f51-7 (HS) - f50-3 (PL) Always Below 1 Ω
      f51-6 (H5) - Body ground Always 10 kΩ or higher
      f51-7 (HS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  12. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (w/o Ottoman) B
      OK (w/ Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  13. INSPECT REAR SEAT CUSHION COVER RH


    1. Remove the cushion cover RH.


    2. Inspect the cushion cover RH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEAT CUSHION COVER RH Click here

    C

    REPLACE REAR SEAT CUSHION COVER RH Click here

    A

  14. INSPECT REAR SEATBACK COVER RH


    1. Remove the seatback cover RH.


    2. Inspect the seatback cover RH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEATBACK COVER RH Click here

    C

    REPLACE REAR SEATBACK COVER RH Click here

    A

  15. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER RH)

    A01H1A4E13

    1. Disconnect the f47 ECU connector.

    2. Disconnect the f46 seatback cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f47-6 (H5) - f46-2 (THR) Always Below 1 Ω
      f47-7 (HS) - f46-3 (PR) Always Below 1 Ω
      f47-6 (H5) - Body ground Always 10 kΩ or higher
      f47-7 (HS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE SEAT CLIMATE CONTROL ECU Click here